How to get Hydraulic Cyl apart? Threaded? w/ Pics

[countryguy]

My first Cyl. seal job!

Issue: Hydraulic Boob Swing Cylinder from a Backhoe 4590 leaks. Images in link below.
simple question.. I took off/out the 4 end bolts and rods. But how do I get one of the cylinder end off this thing to get into replacing the seals???

Cylinder Drawing in link below as well!
I noticed 1 end of Cyl. has a shaft extension internally on the R side (? so I think?).
Thinking that one of these ends unscrew but which one? Feels like the R. should and then pull the whole thing out? but hate to mess this up so thought I would just ask.


https://drive.google.com/drive/folders/1imgk3PjxeTRytLDESrf3HYsFT-qaZAwM?usp=sharing

 

[Kennyd4110]

That is whats called a "tie-rod" cylinder.
After removing the 4 bolts, the end caps will pull off, not easily but they should pull off. The end caps should not be screwed on.

 

[countryguy]

She popped right out! Thank you.

 

[countryguy]

Re: Trick for stiff Glands Seals. How to get Hydraulic Cyl apart? Threaded? w/ Pics

I found this trick on the web... (Pic attached). After 20mins trying to heat and twist and a thick seal popping out I found this trick. 5mins and it was in . I did heat up which made the seam more flexible.

Had it in like 5-7mins... Nice !

 

[North Idaho Wolfman]

Re: Trick for stiff Glands Seals. How to get Hydraulic Cyl apart? Threaded? w/ Pics

I found this trick on the web... (Pic attached). After 20mins trying to heat and twist and a thick seal popping out I found this trick. 5mins and it was in . I did heat up which made the seam more flexible.

Had it in like 5-7mins... Nice !

How does it seal with those zip ties on it?

 

[Kennyd4110]

I boil the seals in water for about 10 minutes, that seems to work well.

There is actually a tool that holds small seals and o-ring in a kidney shape to help with insertion, but that trick works OK as long as you can cut the tie without nicking the seal.

 

[countryguy]

Reo I prefil the Cyl now done? How to get Hydraulic Cyl apart? Threaded? w/ Pics

You guys are the best....!~ Thanks folks... My first Cyl is done and ready to be reassblmed.

quick q- Do you prefill the Cyl w/ fluid at all? or just let the air work out later?

sidebar: I'm dumping the entire system.. and putting in better fluid. I was a NEWB a few years back and put in 'yellow bucket' crap. Getting a good spec fluid in her after the rest of the seals are done.

 

[Kennyd4110]

There is no need to fill the cylinder, the system is self-purging and the air will bleed out when you cycle everything a few times.

 

[bucktail]

My first Cyl. seal job!

Issue: Hydraulic Boob Swing Cylinder from a Backhoe 4590 leaks. Images in link below.
simple question.. I took off/out the 4 end bolts and rods. But how do I get one of the cylinder end off this thing to get into replacing the seals???

Cylinder Drawing in link below as well!
I noticed 1 end of Cyl. has a shaft extension internally on the R side (? so I think?).
Thinking that one of these ends unscrew but which one? Feels like the R. should and then pull the whole thing out? but hate to mess this up so thought I would just ask.


https://drive.google.com/drive/folders/1imgk3PjxeTRytLDESrf3HYsFT-qaZAwM?usp=sharing

What kind of boob needs a hydraulic cylinder to swing it? I'm intrigued and frightened at the same time. Seriously thanks for the write up.

 

[Lil Foot]

Re: Trick for stiff Glands Seals. How to get Hydraulic Cyl apart? Threaded? w/ Pics

I found this trick on the web... (Pic attached). After 20mins trying to heat and twist and a thick seal popping out I found this trick. 5mins and it was in . I did heat up which made the seam more flexible.
Had it in like 5-7mins... Nice !

I use one of these, same effect as the zip tie trick:

 

[Russell King]

What kind of boob needs a hydraulic cylinder to swing it? I'm intrigued and frightened at the same time. Seriously thanks for the write up.

Really the rest of us were playing so nicely and just let that one float right on by...but now you had to take it that direction...

So I also am interested in seeing a picture of that situation to alleviate the fear and satisfy the intrigue.


Sent from my iPad using Tapatalk

 

[Kennyd4110]

Re: Trick for stiff Glands Seals. How to get Hydraulic Cyl apart? Threaded? w/ Pics

I use one of these, same effect as the zip tie trick:

Right, thats the "tool" I mentioned above.

 

[Lil Foot]

Re: Trick for stiff Glands Seals. How to get Hydraulic Cyl apart? Threaded? w/ Pics

Right, thats the "tool" I mentioned above.

Great minds think alike!

 

[nickelplated5s]

What kind of boob needs a hydraulic cylinder to swing it? I'm intrigued and frightened at the same time. Seriously thanks for the write up.

I'm old school. Manual works for me.